[RESOLVED] array structure

zzz

I need to have some sort of array that will contain state and city. There are a few states with multiple cities in each state. The city will have to have two parts: city code and city full name. How do I structure something like this?

CA / fresno / Fresno
CA / la / Los Angeles
CA / sf / San Fransisco

laserlight

You could define a City class that models a city with name and code, and possibly also state. It really depends on what you want to do with this array.

NogDog

Just 2 of the possibilities:

$cities = array(
   'CA' => array(
      array('name' => 'Los Angeles', 'short_name' => 'la'),
      array('name' => 'San Francisco', 'short_name' => 'sf'),
      array('name' => 'Fresno', 'short_name' => 'fresno')
   ),
   'NJ' => array(
      array('name' => 'Ankh-Morpork', 'short_name' => 'am'),
      array('name' => 'New Brunswick', 'short_name' => 'nb'),
      array('name' => 'Trenton', 'short_name' => 'trenton')
   )
);

$cities = array(
      array('state' => 'CA', 'name' => 'Los Angeles', 'short_name' => 'la'),
      array('state' => 'CA', 'name' => 'San Francisco', 'short_name' => 'sf'),
      array('state' => 'CA', 'name' => 'Fresno', 'short_name' => 'fresno'),
      array('state' => 'NJ', 'name' => 'Ankh-Morpork', 'short_name' => 'am'),
      array('state' => 'NJ', 'name' => 'New Brunswick', 'short_name' => 'nb'),
      array('state' => 'NJ', 'name' => 'Trenton', 'short_name' => 'trenton')
);

zzz

Gee... and I thought I was finally getting used to arrays... What would the example of usage of either of these be?

Let's say I will run a loop and only display state codes which will be linked to a page where I'll link cities

<a href="/page.php?state=CA">CA</a>
....

page.php
__________
if ($_GET['state'] == 'CA' ){
   echo '
   <a href="/page.php?state=CA&city=la">Los Angeles</a>
   <br>
   <a href="/page.php?state=CA&city=sf">San Francisco</a>';
}

NogDog

If you used my first method, you could then loop through the applicable state sub-array.

if(!empty($_GET['state']) and !empty($cities[$_GET['state']]))
{
   echo "<ul>\n";
   foreach($cities[$_GET['state']] as $cityInfo)
   {
      printf(
         "<li><a href='/page.php?state=%s&city=%s'>%s</a></li>\n",
         htmlspecialchars($_GET['state']),
         htmlspecialchars($cityInfo['short_name']),
         htmlspecialchars($cityInfo['name']
      ); 
   }
echo "</ul>\n";
}

zzz

SOLD!

NogDog

zzz;10908201 wrote:
SOLD!

Great! Where do I send the invoice?

jk 😉 :p